PI2001 Datasheet, PDF (2/23 Pages) Vicor Corporation – Universal Active ORing Controller IC

Pin Description
Pin
Name
GND
Pin Number
10 Lead 8 Lead
TDFN SOIC
1
1
GATE
2
2
VC
3
3
SL
4
n/a
BK
5
4
FT
6
5
SP
7
6
SN
8
7
UV
9
8
OV
10
n/a
Description
Ground: This pin is ground for the gate driver and control circuitry.
Gate Drive Output: This pin drives the gate of the external N-channel MOSFET.
Under normal operating conditions, the GATE pin pulls high to 9.5V (typ) with respect
to the SP pin. The controller turns the gate off during a reverse current fault that
exceeds the reverse voltage threshold.
Controller Input Supply: This pin is the supply pin for the control circuitry and gate
driver. Connect a 1μF capacitor between VC pin and the GND pin. Voltage on this pin
is limited to 15.5V by an internal shunt regulator. For high voltage auxiliary supply
applications connect a shunt resistor between VC and the auxiliary supply.
Slave Input-Output: This pin is used for paralleling multiple PI2001 solutions in high
power applications. When the PI2001 is configured as the Master, this pin functions
as an output capable of driving up to 10 SL pins of slaved PI2001 devices. It serves
as an input when the PI2001 is configured in slave mode.
Blanking Timer Input-Output: Connect a resistor from BK to GND to set the blanking
time for the Reverse Comparator function. To configure the controller in slave mode,
connect BK to VC. To configure the controller in master mode with the fastest turn-off
response, connect BK directly to GND.
Fault State Output: This open collector pin pulls low when a fault occurs. Fault logic
inputs are VC Under-Voltage, Input Under-Voltage, Input Over-Voltage, Forward Over-
Current, light load, reverse current, and Over-Temperature. Leave this pin open if
unused.
Positive Sense Input & Clamp: Connect SP pin to the Source pin of the external N-
channel MOSFET. The polarity of the voltage difference between SP and SN provides
an indication of current flow direction through the MOSFET.
Negative Sense Input & Clamp: Connect SN to the Drain pin of the external N-
channel MOSFET. The polarity of the voltage difference between SP and SN provides
an indication of current flow direction through the MOSFET.
Input Under-Voltage Input: The UV pin is used to detect an input source under-
voltage condition in ground referenced applications. When the UV pin voltage drops
below the UV threshold, the FT pin pulls low indicating a fault condition. The input
voltage UV threshold is programmable through an external resistor divider. Connect
UV to VC to disable this function.
Input Over-Voltage Input: The OV pin is used to detect an input source over-voltage
condition in ground referenced applications. When the OV pin voltage crosses the OV
threshold, the FT pin pulls low indicating a fault condition. The input voltage OV
threshold is programmable through an external resistor divider. Connect OV to GND
to disable this function.
Package Pin-Outs
10 Lead TDFN (3mm x 3mm)
Top view
Picor Corporation • picorpower.com
8 Lead SOIC (5mm x 6mm)
Top view
PI2001
Rev 1.0 Page 2 of 23